Meniscus lenses allow minimal spherical aberrations when a parallel beam enters the convex surface. This results in a minimum focal spot size for the incoming collimated light source. All meniscus lenses shown have positive focal lengths. Negative focal lengths are available upon request.

All series LM lenses are coated and optimized for use at 10.6 microns.



Diameter Tolerance: + 0.000″ / – 0.005″
Thickness Tolerance: +/- 0.010″
Centering Tolerance: 3 Arc Minutes Maximum
Sphericity: < 1/40th wave at 10.6 microns
Surface Quality: 40-20 Scratch-Dig
Focal Length Tolerance: +/- 0.5 %
Absorption: 0.25 % total
AR Coating Reflectivity: R < 0.5 % at 10.6 microns

Orders from stock typically ship in 3-5 days. Manufacturing lead time can be 2-3 weeks. Please call the factory for expedited delivery or quantity discounts.

Showing all 20 results

Catalog No. Material Diameter Focal Length Edge Thickness QOH Price Order
LM-1015-Z-ET2.0 ZnSe1.000"1.500"0.080"8$350.00
LM-1116-Z-ET2.0 ZnSe1.100"1.648"0.080"17$330.00
LM-1125-A-ET1.88 GaAs1.100"2.500"0.074"14$275.00
LM-1125-Z-ET3.0 ZnSe1.100"2.500"0.120"17$260.00
LM-1135-Z-ET3.0 ZnSe1.100"3.500"0.120"6$245.00
LM-1137-Z-ET4.0 ZnSe1.100"3.750"0.160"18$230.00
LM-1150-Z-ET3.0 ZnSe1.100"5.000"0.120"0$220.00Request a Quote
LM-1150-Z-ET6.0 ZnSe1.100"5.000"0.236"7$235.00
LM-1175-Z-ET2.8 ZnSe1.100"7.500"0.110"55$210.00
LM-1525-Z-ET3.0 ZnSe1.500"2.500"0.120"5$340.00
LM-1538-Z-ET7.37 ZnSe1.500"3.750"0.290"0$290.00Request a Quote
LM-1550-Z-ET6.0 ZnSe1.500"5.000"0.236"13$275.00
LM-1550-Z-ET7.37 ZnSe1.500"4.998"0.290"33$280.00
LM-1550-Z-ET9.0 ZnSe1.500"5.000"0.354"12$395.00
LM-1575-Z-ET6.0 ZnSe1.500"7.500"0.236"12$280.00
LM-1575-Z-ET7.37 ZnSe1.500"7.515"0.290"30$275.00
LM-1575-Z-ET9.0 ZnSe1.500"7.500"0.354"5$375.00
LM-1590-Z-ET7.37 ZnSe1.500"9.000"0.290"1$270.00
LM-2050-Z-ET9.0 ZnSe2.000"5.000"0.354"0$595.00Request a Quote
LM-2075-Z-ET9.0 ZnSe2.000"7.500"0.354"5$600.00